Ulrich Kuhl - Institut de Physique de Nice, UNS, UMR7010, UCA - Keywords: wave phenomena

Ulrich Kuhl - Institut de Physique de Nice, UNS, UMR7010, UCA - Keywords: wave phenomena

Contribution title: Forming wave structures inside a system by using only scattering information

We will present here two different approaches using only transmission information to tame the behaviour of the waves inside the system. First we show how to create a wave which has intensities only along paths connecting the input to the output, i.e., a beam, even though scattering and diffraction effects are not small. Second we will focus the waves onto a 'moving' target without knowing where it is. The ideas are implemented as microwave experiments showing the feasibility in real life and the possibility to use them in wireless communication. The theoretical approach is based on the Wigner Smith time delay matrix (or a generalized version of it) using only transmission information.